package com.bdqn.ch06SL.aop;

import org.apache.log4j.Logger;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;

import java.util.Arrays;

/**
 * 提取的公共日志代码
 * 使用注解定义切面
 */
@Aspect
public class UserServiceLogger {
    private static final Logger logger = Logger.getLogger(UserServiceLogger.class);

    /**
     * 前置增强代码
     *
     * @param jp
     */
    @Before("execution(* com.bdqn.ch06SL.service.UserService.*(..))")
    public void before(JoinPoint jp) {
        logger.info("调用" + jp.getTarget() + " 的 " + jp.getSignature().getName()
                + " 方法。方法返回值：" + Arrays.toString(jp.getArgs()));
    }

    /**
     * 后置增强代码
     *
     * @param jp
     * @param resultValue
     */
    @AfterReturning(pointcut = "execution(* com.bdqn.ch06SL.service.UserService.*(..))", returning = "resultValue")
    public void afterReturning(JoinPoint jp, Object resultValue) {
        logger.info("调用" + jp.getTarget() + " 的 " + jp.getSignature().getName()
                + " 方法。方法返回值：" + resultValue);
    }
}
